Wrench



lfatented June 9, 1925.

UNI-TED! i sfr Es RICHARD-AG. decora, 01s.- nninonron, Anneau-rn, canapa.

WRENCH.

Application ledr'Apjril l,

T0 all. 'Lo/tom ama-y concern."

Be it knowny that l, .Bromuro G.' SCOTT, a subject of the King of vGrreat Britain, residing at Edmonton, inl the VProvince of Alberta and Dominion of Canada, have invented certain new and useful Improve-` ments in lVrenches, ofwhi'ch the followingl is a specification.`

rlhis invention .relates tonew andusefu'l improvements Ain wrenches.` and has for its principal 'object to provide a simple and effi-l cient device whichmay be `used eitherl in connection with'A objects having" round or square or flat'surfaces. l y

A further object of theinvention lis to provide a wrenchof the 'above-mentioned character, wherebythe `same may be easily and'quickly adjustedtothe' desired size of objects upon which the same is to be used, means being further provided for holding the slidable jaw of the wrench in its proper adjusted position against accidental displacement while the same is in use.

Other objects and advantages of this invention willobecome apparent during the course of the followingdescription.

ln the accompanying drawing forming a part of this specification, and in which like numerals designate like Aparts throughout the sama Figure 1 is a side elevation of my invention with parts shown in section,

Fig. 2 is an end elevation thereof,

Fig. 3 is a vertical section taken on line 8-3 of Fig. .1,

Fig. et is a detail view spring fingers, and

Fig. 5 is a transverse section taken approximately on the line 5-5 of Fig. l.

In the drawing wherein for the purpose of illustration is shown the preferred einbcdiinent of my invention, the numeral 1 designates an elongated shank the lower end of which is reduced as shown at 2 in the drawing to receive a suitable handle 3. Formed on the upper end of the shank 1 is the stationary j aw 4 which includes the extensions 5 and 6, respectively. The bottom surface of the extension 5 is serrated as shown at 7 while the bottom surface of the extension 6 is substantially smooth as shown at 8 in the drawing. The purpose of this construction will be hereinafter more fully described. Provided in the side faces or edges of the shank 1 for its entire length .between the stationary jaw and the upper of one of the 1924.' Serial' No'. .7703,429.

portion of the handle 2 are the transversely varrangedserrations-Q and 10, respectively.

Slidably supported-'on the shank-1 andadaptedlongitudinal movement thereon between the station-ary jaw and the upper end of the handle is thev slidable jaw 11. -i

rlllhis slidable jaw 11 has extensions 12 and 13 formed on the upper portion thereof which aie adaptedtocoact'with the extensions and 6 formed on the stationary jaw 4 andthe upper surfaceV of the-extension-1QI is provided with serrations 1/-l which2co-og-A erate with-theserrations 7 andthe extension 13 has its upper surface A smooth as illustrated at 15 toco-o-perate with the smooth surface` 8 of the extension 6 of the stationaryjaw substantially l. The side fwalls' ofthe opening 16 extending--thrmiglrthc-`v slidable jaw 13 whereby the same may be supportedon the shank 1 are also provided with transversely arranged serrations such as are shown at 17 to co-operate with the serrations 9 and 10, respectively7 formed in the side edges of the shank 1.

Arranged on the front and rear faces of the shank 1 and extending longitudinally thereon are the nurled or milled surfaces suc-l1 as are shown at 1S in the drawing The purpose of lthis construction will be presently apparent. Formed in the front and rear faces of the slidable jaw 11 and eX- tending inwardly from opposite sides thereof are the cutout portions or grooves 19 and 20, respectively. The cutoutportions extend transversely through the opening 16 and have their inner ends communicating therewith in the manner as clearly shown in Fig. 5 of the drawing.

Adapted te be detachably support each `of the cutcut portions is the sl finger 21 the outer end of eac-h finger hav ing an opening Q2 formed therein whereby the fastening screw Q3 will extend therethrough and support the same in each groove formed in the slidable jaw. The inner end of each of the spring fingers is enlarged as shown at 24 and the inner surface of the enlarged portion 24 of each finger is also nurled or milled to co-operate with the nurled or milled surfaces 18 on the front and rear sides of the shank 1 in the manner as clearly shown in Fig. 5 of the drawing.

The nurled surfaces Q5 of the spring fingers 21 will normally be in engagement with the nurled surfaces 18 of the'shank 1 and provides a means for holding the slidable Vjaw lever in its adjusted position on the shank l. The extension 5 and the co-action extension l2 Which have their inner opposed faces provided with serrations are adapted to be used When the Wrench is placed on round objects such as pipes or the like, While the smooth inner opposed surfaces of the kopposite extension are used in connection with objects having fiat surfaces such as nuts or the like.

With the Wrench of the above-mentioned character, the slidable jaw may be easily and quickly adjusted to the proper size and the spring finger 21 will hold the slidable jaw, in its proper adjusted position and against accidental displacement on the shank When the object which is being turned by the Wrench is in position therein. The simplicity of my device enables the same to be manufactured at a very loiv cost and does not require the use of a complicated number of parts in order to hold the slidable jaw in its proper adjusted position.

While I have shown the preferred enibodiment of my invention, it is to be understood that various changes in the size, shape, and arrangement of parts may be resorted to Without departing from the spirit of the invention and the scope of the appended claim.

I-Iaving thus described my invention, what I claim is:

A Wrench comprising a shank having` a jaw fixed thereto, said shank having rectangularly disposed side surfaces, the opposite side surfaces being disposed parallel with relation to each other, tWo of the opposite side surfaces being nurled, and the other two intervening side Surfaces being milled, a jaw movably mountedupon the shank and having an opening' which loosely receives the shank, two of the opposite Wall surfaces of the openings being provided with serratious adapted to engage the milled surfaces of the shanks, the said movable jaw being provided at its intervening sides with slots leading' in from opposite edges of the said movable jaiv, and spring fingers secured to the movable jaw and extending along the slot and having nurled surfaces adapt-ed to resiliently engage the nurled surfaces of the shank. y

In testimony whereof I affix my signature.

RICHARD G. soorr. 

